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Finding the Fourth Proportional to 111,443.44, 153,794.64 and 61,142.44

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Solution

The fourth proportional to 111,443.44, 153,794.64 and 61,142.44 is: 84,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,443.44 : 153,794.64 = 61,142.44 : x
  2. Step 2: Convert to fraction form
    111,443.44/153,794.64 = 61,142.44/x
  3. Step 3: Cross multiply
    111,443.44x = 153,794.64 × 61,142.44
  4. Step 4: Simplify right side
    111,443.44x = 9,403,379,393.32
  5. Step 5: Solve for x
    x = 9,403,379,393.32/111,443.44
  6. Step 6: Final answer
    x = 84,378.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.